After riding my Specialized Power and Phenom saddles for the last 8 or so years, I decided to give this Selle Italia model a try. To my surprise it is fantastic so far. Hits my sit bones (145 mm) perfectly. I was cramping on the sitbones on the Specialized, but so far ,after a couple of hundred miles or so, so good. Sure hope it lasts.
This saddle fits great and has just the right amount of padding. The massive cutout works extremely well, especially if you are dealing with pain or numbness down below. In addition, the cutout runs almost up to the nose of saddle, helping to remain comfortable even in an aggressive position.
The Selle Italia SLR Boost Superflow is an amazing saddle. The center cut-out is perfectly designed. It is a tad bit shorter in length than most saddles, and it completely makes sense. When transferring from a super-tuck, or a standing position and back onto the saddle. The shorter nose prevents the rear/crotch area of my cycling shorts from getting caught up on the nose. I initially thought I was the only one that noticed this until I had a conversation with someone else that loved their identical model of saddle. I love my saddle and wouldn't use a different model. If I could guarantee that you would also, I would tell you to purchase this saddle with confidence - it is fantastic.
This is a very comfortable saddle at a great price. Been using Selle Italia for many years on different bikes. Highly recommended, cannot go wrong with this choice.